The 21A has no extractor. It relies on the blowback of the round to open the slide enough for a little finger that protrudes from the face of the slide to tip the spent casing to the side and out of the way. This works well with the right ammo but with the wrong ammo it will constantly jamb. I use cci stingers and have shot hundreds of rounds through mine in 20+ years with good results. Is it the right ccw gun? .22s are too light in my opinion but no other gun is more concealable.